Effects of the Length Variations of LYSO and Plastic Optical Fiber on the Energy Spectrum Responses of a Fiber-optic Radiation Sensor. - Yoo, W. J.; Jang, K. W.; Shin, S. H.; Jeon, D.; Park, B. G.; Kim, S.; Moon, J. H.; Cho, S.; Lee, B. (PIERS Proceedings, 2013)